Python Django';类型';对象是不可编辑的
我使用Django Rest框架制作了一个简单的API,列出了他们尊敬的大学的学生。列出数据的url是Python Django';类型';对象是不可编辑的,python,django,django-rest-framework,Python,Django,Django Rest Framework,我使用Django Rest框架制作了一个简单的API,列出了他们尊敬的大学的学生。列出数据的url是http://127.0.0.1:8000/api/v1/students/。在试用了API之后,我得到了以下错误 TypeError at /api/v1/students/ 'type' object is not iterable Internal Server Error: /api/v1/students/ Traceback (most recent call last): F
http://127.0.0.1:8000/api/v1/students/
。在试用了API之后,我得到了以下错误
TypeError at /api/v1/students/
'type' object is not iterable
Internal Server Error: /api/v1/students/
Traceback (most recent call last):
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/django/core/handlers/base.py", line 128, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/django/views/generic/base.py", line 69, in view
return self.dispatch(request, *args, **kwargs)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/rest_framework/views.py", line 477, in dispatch
request = self.initialize_request(request, *args, **kwargs)
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/rest_framework/views.py", line 379, in initialize_request
authenticators=self.get_authenticators(),
File "/Users/gilangramadhanilhami/Desktop/88sparses/shipment/tracking/lib/python3.6/site-packages/rest_framework/views.py", line 273, in get_authenticators
return [auth() for auth in self.authentication_classes]
TypeError: 'type' object is not iterable
我能够找到一些关于StackOverflow的解决方案,但没有太多的运气找到解决方案。我在views.py
文件中使用APIView
,我想了解使用APIView
时发生这种情况的原因(此问题也会在使用Viewset
时出现)
我已尝试更改权限更改权限没有帮助。同样,将many=True
设置为“False”也不能解决问题
有人有什么想法吗?提前谢谢
以下是其他文件,以便更好地理解此问题
型号.py
from django.db import models
class University(models.Model):
name = models.CharField(max_length=50)
url = models.URLField(unique=True)
class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"
def __str__(self):
return self.name
class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete=models.CASCADE,)
class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
from rest_framework import serializers
from . import models
class StudentSerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'first_name',
'last_name',
'university'
)
model = models.Student
class UniversitySerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'name',
'url'
)
model = models.University
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from . import serializers
class ListStudent(APIView):
def list(self, request, format=None):
students = models.Student.objects.all()
serializer = serializers.StudentSerializer(students, many=True)
return Response(serializer.data)
from django.urls import path
from . import views
urlpatterns = [
path('', views.ListStudent.as_view(), name='student_list')
]
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('api/v1/students/', include(('students.urls','students'), namespace='students')),
]
序列化程序.py
from django.db import models
class University(models.Model):
name = models.CharField(max_length=50)
url = models.URLField(unique=True)
class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"
def __str__(self):
return self.name
class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete=models.CASCADE,)
class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
from rest_framework import serializers
from . import models
class StudentSerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'first_name',
'last_name',
'university'
)
model = models.Student
class UniversitySerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'name',
'url'
)
model = models.University
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from . import serializers
class ListStudent(APIView):
def list(self, request, format=None):
students = models.Student.objects.all()
serializer = serializers.StudentSerializer(students, many=True)
return Response(serializer.data)
from django.urls import path
from . import views
urlpatterns = [
path('', views.ListStudent.as_view(), name='student_list')
]
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('api/v1/students/', include(('students.urls','students'), namespace='students')),
]
视图.py
from django.db import models
class University(models.Model):
name = models.CharField(max_length=50)
url = models.URLField(unique=True)
class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"
def __str__(self):
return self.name
class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete=models.CASCADE,)
class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
from rest_framework import serializers
from . import models
class StudentSerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'first_name',
'last_name',
'university'
)
model = models.Student
class UniversitySerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'name',
'url'
)
model = models.University
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from . import serializers
class ListStudent(APIView):
def list(self, request, format=None):
students = models.Student.objects.all()
serializer = serializers.StudentSerializer(students, many=True)
return Response(serializer.data)
from django.urls import path
from . import views
urlpatterns = [
path('', views.ListStudent.as_view(), name='student_list')
]
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('api/v1/students/', include(('students.urls','students'), namespace='students')),
]
学生/url.py
from django.db import models
class University(models.Model):
name = models.CharField(max_length=50)
url = models.URLField(unique=True)
class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"
def __str__(self):
return self.name
class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete=models.CASCADE,)
class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
from rest_framework import serializers
from . import models
class StudentSerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'first_name',
'last_name',
'university'
)
model = models.Student
class UniversitySerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'name',
'url'
)
model = models.University
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from . import serializers
class ListStudent(APIView):
def list(self, request, format=None):
students = models.Student.objects.all()
serializer = serializers.StudentSerializer(students, many=True)
return Response(serializer.data)
from django.urls import path
from . import views
urlpatterns = [
path('', views.ListStudent.as_view(), name='student_list')
]
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('api/v1/students/', include(('students.urls','students'), namespace='students')),
]
url.py
from django.db import models
class University(models.Model):
name = models.CharField(max_length=50)
url = models.URLField(unique=True)
class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"
def __str__(self):
return self.name
class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete=models.CASCADE,)
class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
from rest_framework import serializers
from . import models
class StudentSerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'first_name',
'last_name',
'university'
)
model = models.Student
class UniversitySerializer(serializers.ModelSerializer):
class Meta:
fields = (
'id',
'name',
'url'
)
model = models.University
from rest_framework.views import APIView
from rest_framework.response import Response
from . import models
from . import serializers
class ListStudent(APIView):
def list(self, request, format=None):
students = models.Student.objects.all()
serializer = serializers.StudentSerializer(students, many=True)
return Response(serializer.data)
from django.urls import path
from . import views
urlpatterns = [
path('', views.ListStudent.as_view(), name='student_list')
]
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('api/v1/students/', include(('students.urls','students'), namespace='students')),
]
我认为这是个小错误。我的
'DEFAULT\u AUTHENTICATION\u CLASSES'
如下所示
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework.authentication.SessionAuthentication'
),
'DEFAULT_PERMISSION_CLASSES': (
'rest_framework.permissions.IsAuthenticatedOrReadOnly'
),
}
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework.authentication.SessionAuthentication',
),
'DEFAULT_PERMISSION_CLASSES': (
'rest_framework.permissions.IsAuthenticatedOrReadOnly',
),
}
这里我缺少的是一个简单的,
。应该是这样的
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework.authentication.SessionAuthentication'
),
'DEFAULT_PERMISSION_CLASSES': (
'rest_framework.permissions.IsAuthenticatedOrReadOnly'
),
}
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework.authentication.SessionAuthentication',
),
'DEFAULT_PERMISSION_CLASSES': (
'rest_framework.permissions.IsAuthenticatedOrReadOnly',
),
}
我意识到“iterable”这个词的意思。希望这能有所帮助。还有什么可以追溯的吗?你能设置DEBUG=True吗?@DanielRoseman我已经编辑了这个问题,并对错误做了一些额外的描述。这也是DEBUG=TrueWell,这似乎与您发布的代码无关。你能显示你的默认认证类设置吗?没关系,我已经解决了。
DEFAULT\u AUTHENTICATION\u CLASSES
看起来像这样的'DEFAULT\u AUTHENTICATION\u CLASSES':('rest\u framework.AUTHENTICATION.SessionAuthentication'),
。我缺少一个逗号,因为该值应该是一个元组。无论如何,谢谢你:)